:root {
  --primary-color: #1db954;
  --secondary-color: #191414;
  --background: #121212;
  --surface: #282828;
  --text-color: #ffffff;
  --text-primary: #ffffff;
  --text-secondary-color: #d1d1d1;
  --hover: #1ed760;
  --card-bg-color: #282828;
  --gradient-primary: linear-gradient(135deg, #1db954, #1ed760);
  --gradient-background: linear-gradient(135deg, #121212, #1e1e1e);
  --gradient-surface: linear-gradient(to bottom, #1e1e1e, #121212);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
  --transition-slow: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
  --glass-effect: rgba(255, 255, 255, 0.1);
  --glass-blur: 5px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Poppins", sans-serif;
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.6;
}

.container {
  display: flex;
  height: calc(100vh - 90px);
}

.sidebar {
  width: 240px;
  background-color: var(--secondary-color);
  padding: 20px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar,
.player {
  backdrop-filter: blur(10px);
  background-color: rgba(25, 20, 20, 0.8);
}

.logo {
  width: 120px;
  margin-bottom: 40px;
  align-self: center;
  transition: var(--transition);
  filter: drop-shadow(0 0 10px rgba(29, 185, 84, 0.5));
}

.logo:hover {
  transform: scale(1.1) rotate(5deg);
  filter: drop-shadow(0 0 15px rgba(29, 185, 84, 0.8));
}

.nav-item {
  padding: 10px 15px;
  margin-bottom: 10px;
  border-radius: 5px;
  border-left: 3px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  color: var(--text-secondary-color);
  font-weight: 500;
  position: relative;
  overflow: hidden;
  background: linear-gradient(90deg, transparent, transparent);
}

.nav-item i {
  margin-right: 10px;
  font-size: 1.2em;
  transition: var(--transition);
}

.nav-item:hover {
  transform: translateX(5px);
  background-color: var(--surface);
}

.nav-item:hover i {
  transform: scale(1.2) rotate(15deg);
}

.nav-item::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: var(--transition);
}

.nav-item:hover,
.nav-item.active {
  border-left-color: var(--primary-color);
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-item:hover::after {
  transform: scaleX(1);
}

.nav-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--primary-color);
  transform: scaleY(0);
  transition: transform 0.3s, opacity 0.3s;
  opacity: 0;
}

.nav-item:hover::before {
  transform: scaleY(1);
  opacity: 1;
}

.main-content {
  flex-grow: 1;
  padding: 30px;
  overflow-y: auto;
  background: radial-gradient(
    circle at top right,
    #1e1e1e,
    var(--background-color)
  );
}

.btn,
#createPlaylistBtn,
#searchButton {
  background: var(--gradient-primary);
  border: none;
  padding: 10px 20px;
  border-radius: 20px;
  position: relative;
  overflow: hidden;
  color: var(--text-color);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.btn::before,
#createPlaylistBtn::before,
#searchButton::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: all 0.6s;
}

.btn:hover::before,
#createPlaylistBtn:hover::before,
#searchButton:hover::before {
  left: 100%;
}

.btn,
#createPlaylistBtn {
  background: var(--gradient-primary);
  border: none;
  padding: 10px 20px;
  border-radius: 20px;
  color: var(--text-color);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn:hover,
#createPlaylistBtn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

h1,
h2 {
  color: var(--text-color);
  margin-bottom: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  background: linear-gradient(
    to right,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

#songList,
#searchResults,
#libraryList,
#playlistList {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  padding: 20px 0;
}

.song-item {
  cursor: pointer;
  padding: 10px;
  background: linear-gradient(
    145deg,
    var(--glass-effect),
    rgba(36, 36, 36, 0.7)
  );
  border-radius: 12px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border: 1px solid transparent;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.song-item::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 70%
  );
  transform: scale(0);
  transition: var(--transition-slow);
}

.song-item:hover::before {
  transform: scale(1);
}

.song-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  border-color: var(--primary-color);
  backdrop-filter: blur(0);
  -webkit-backdrop-filter: blur(0);
  background: linear-gradient(145deg, #2a2a2a, #242424);
}

.btn,
#createPlaylistBtn,
#searchButton {
  transition: all 0.3s ease;
}

.btn:hover,
#createPlaylistBtn:hover,
#searchButton:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.cover-art {
  width: 160px;
  height: 160px;
  border-radius: 8px;
  background-color: var(--secondary-color);
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 20px;
  margin-right: 0px;
  background-size: cover;
  background-position: center;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
}

.song-item:hover .cover-art {
  transform: scale(1.05) rotate(3deg);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

.cover-art i {
  font-size: 50px;
  color: var(--text-secondary-color);
  transition: var(--transition);
}

.song-item:hover .cover-art i {
  transform: scale(1.1) rotate(-10deg);
  color: var(--primary-color);
}

.song-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-grow: 1;
}

.song-title {
  font-weight: 600;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  color: var(--text-color);
  font-size: 1.1em;
  transition: var(--transition);
}

.song-item:hover .song-title {
  color: var(--primary-color);
}

.song-artist {
  font-size: 0.9em;
  color: var(--text-secondary-color);
  transition: var(--transition);
}

.song-item:hover .song-artist {
  color: var(--text-color);
}

.song-action-btn,
.add-to-playlist-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: linear-gradient(
    to bottom right,
    var(--primary-color),
    var(--secondary-color)
  );
  color: var(--text-color);
  border: none;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: var(--transition);
  opacity: 0;
  transform: scale(0.8);
}

.song-item:hover .song-action-btn,
.song-item:hover .add-to-playlist-btn {
  opacity: 1;
  transform: scale(1);
}

.song-action-btn:hover,
.add-to-playlist-btn:hover {
  background: linear-gradient(
    to bottom right,
    var(--secondary-color),
    var(--primary-color)
  );
  transform: scale(1.1) rotate(90deg);
}

.player {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--surface);
  padding: 0 20px;
  display: flex;
  backdrop-filter: blur(10px);
  align-items: center;
  justify-content: space-between;
  height: 100px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.player-left,
.player-center,
.player-right {
  display: flex;
  align-items: center;
  flex: 1;
}

.player-right {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.player-left,
.player-right {
  width: 25%;
}

.player-center {
  width: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.player-cover {
  width: 60px;
  height: 60px;
  border-radius: 4px;
  margin-right: 15px;
  background-size: cover;
  background-position: center;
  background-color: var(--secondary-color);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
}

.player-cover:hover {
  transform: scale(1.1) rotate(3deg);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

.player-info {
  display: flex;
  flex-direction: column;
}

.player-song-title,
.player-song-artist {
  transition: var(--transition);
}

.player-song-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--text-color);
}

.player-song-title:hover {
  color: var(--primary-color);
}

.player-song-artist {
  font-size: 12px;
  color: var(--text-secondary-color);
}

.player-song-artist:hover {
  color: var(--text-color);
}

.player-controls {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
}

.player-btn {
  background: none;
  color: var(--text-primary);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 24px;
  position: relative;
  overflow: hidden;
  margin: 0 15px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: var(--transition);
}

.player-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 0 15px rgba(29, 185, 84, 0.5);
  color: var(--hover);
}

.player-btn::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s;
}

.player-btn:active::after {
  width: 100px;
  height: 100px;
}

.progress-container {
  width: 100%;
  height: 4px;
  background-color: var(--secondary-color);
  cursor: pointer;
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 10px;
}

.progress-bar {
  height: 5px;
  background-color: var(--primary-color);
  width: 0;
  border-radius: 2.5px;
  transition: width 0.3s ease;
  animation: glow 2s infinite;
}

.volume-control {
  display: flex;
  align-items: center;
  width: 150px;
  justify-content: flex-end;
}

.volume-icon {
  color: var(--text-secondary-color);
  font-size: 18px;
  margin-right: 10px;
  cursor: pointer;
  transition: var(--transition);
}

.volume-icon:hover {
  color: var(--hover-color);
  transform: scale(1.1) rotate(-15deg);
}

.volume-slider {
  -webkit-appearance: none;
  width: 100px;
  height: 5px;
  border-radius: 2.5px;
  background: linear-gradient(
    to right,
    var(--primary-color),
    var(--secondary-color)
  );
  outline: none;
  opacity: 0.7;
  transition: var(--transition);
}

.volume-slider:hover {
  opacity: 1;
}

.volume-slider::-webkit-slider-thumb {
  width: 15px;
  height: 15px;
}

html {
  scroll-behavior: smooth;
}

.volume-slider::-webkit-slider-thumb,
.volume-slider::-moz-range-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text-color);
  cursor: pointer;
  transition: var(--transition);
}

.volume-slider::-webkit-slider-thumb:hover,
.volume-slider::-moz-range-thumb:hover {
  background: var(--hover-color);
  transform: scale(1.2);
}

.search-container {
  display: flex;
  margin-bottom: 20px;
}

#searchInput,
#searchButton {
  padding: 12px 15px;
  font-size: 16px;
  transition: var(--transition);
}

#searchInput {
  flex-grow: 1;
  border: none;
  background: linear-gradient(145deg, #2a2a2a, #242424);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
  color: var(--text-color);
  border-radius: 25px 0 0 25px;
}

#searchInput:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--primary-color);
}

#searchButton {
  background: var(--gradient-primary);
  color: var(--text-color);
  border: none;
  border-radius: 0 25px 25px 0;
  cursor: pointer;
}

#searchButton:hover {
  background: linear-gradient(
    to left,
    var(--primary-color),
    var(--secondary-color)
  );
  transform: scale(1.05);
}

.playing-indicator {
  position: absolute;
  top: 10px;
  left: 10px;
  background: linear-gradient(
    to right,
    var(--primary-color),
    var(--secondary-color)
  );
  color: var(--text-color);
  padding: 4px 8px;
  border-radius: 12px;
  font-size: 0.7em;
  font-weight: 600;
  opacity: 0;
  transition: var(--transition);
  transform: translateY(-10px);
}

.song-item.playing .playing-indicator {
  opacity: 1;
  transform: translateY(0);
}

.song-item.playing {
  background: linear-gradient(145deg, #2d2d2d, #272727);
  box-shadow: 0 0 0 2px var(--primary-color);
}

.fade-in {
  animation: fadeIn 0.5s ease-in;
}

/* Animaciones */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease-out;
}

@keyframes glow {
  0% {
    box-shadow: 0 0 5px var(--primary-color);
  }

  50% {
    box-shadow: 0 0 20px var(--primary-color), 0 0 30px var(--primary-color);
  }

  100% {
    box-shadow: 0 0 5px var(--primary-color);
  }
}

@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

.loading::after {
  content: "";
  display: block;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 3px solid var(--primary-color);
  border-color: var(--primary-color) transparent var(--primary-color)
    transparent;
  animation: rotate 1.2s linear infinite;
}

#genreFilter {
  margin-bottom: 20px;
  padding: 10px 15px;
  border-radius: 20px;
  background: linear-gradient(145deg, #2a2a2a, #242424);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  color: var(--text-color);
  border: none;
  font-size: 14px;
  transition: var(--transition);
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

#genreFilter:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--primary-color);
}

#genreFilter:hover {
  background: linear-gradient(145deg, #3a3a3a, #343434);
}

#genreFilter option {
  background-color: var(--surface-color);
  color: var(--text-color);
  padding: 10px;
}

#genreFilter::-ms-expand {
  display: none;
}

#genreFilter::after {
  content: "\25BC";
  position: absolute;
  top: 0;
  right: 0;
  padding: 10px;
  background-color: var(--primary-color);
  transition: var(--transition);
  pointer-events: none;
}

#genreFilter:hover::after {
  background-color: var(--hover-color);
}

/* Estilos para la vista de playlists */
.playlist-item {
  display: flex;
  align-items: center;
  padding: 15px;
  margin-bottom: 15px;
  background: linear-gradient(145deg, #2a2a2a, #242424);
  border-radius: 10px;
  transition: all 0.3s ease;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.playlist-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
  background: linear-gradient(145deg, #2d2d2d, #272727);
}

.playlist-cover {
  width: 80px;
  height: 80px;
  object-fit: cover;
  margin-right: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

.playlist-item:hover .playlist-cover {
  transform: scale(1.05) rotate(2deg);
}

.playlist-info {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.playlist-name {
  font-weight: bold;
  font-size: 1.2em;
  margin-bottom: 5px;
  color: var(--text-color);
  transition: color 0.3s ease;
}

.playlist-item:hover .playlist-name {
  color: var(--primary-color);
}

.playlist-song-count {
  font-size: 0.9em;
  color: var(--text-secondary-color);
}

.playlist-icon {
  margin-left: auto;
  font-size: 1.5em;
  color: var(--primary-color);
  opacity: 0;
  transition: all 0.3s ease;
}

.playlist-item:hover .playlist-icon {
  opacity: 1;
  transform: translateX(-10px);
}

/* Estilos para la vista de canciones de una playlist */
#playlistView {
  padding: 30px;
  background: linear-gradient(145deg, #1e1e1e, #242424);
  border-radius: 15px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

#playlistSongsList {
  list-style-type: none;
  padding: 0;
}

.playlist-song-item {
  display: flex;
  align-items: center;
  padding: 12px;
  border-radius: 8px;
  transition: all 0.3s ease;
  cursor: pointer;
  margin-bottom: 10px;
  background: linear-gradient(145deg, #282828, #2a2a2a);
}

.playlist-song-item:hover {
  transform: translateX(5px);
  background: linear-gradient(145deg, #2a2a2a, #2d2d2d);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.playlist-song-info {
  flex-grow: 1;
  margin-left: 15px;
  display: flex;
  flex-direction: column;
}

.playlist-song-title {
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 3px;
  transition: color 0.3s ease;
}

.playlist-song-item:hover .playlist-song-title {
  color: var(--primary-color);
}

.playlist-song-artist,
.playlist-song-duration {
  font-size: 0.9em;
  color: var(--text-secondary-color);
}

.playlist-song-cover {
  width: 50px;
  height: 50px;
  border-radius: 5px;
  object-fit: cover;
  transition: all 0.3s ease;
}

.playlist-song-item:hover .playlist-song-cover {
  transform: scale(1.1) rotate(3deg);
}

.playlist-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
}

.playlist-control-btn {
  background: var(--gradient-primary);
  color: var(--text-color);
  border: none;
  padding: 10px 20px;
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 600;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.playlist-control-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
  background: linear-gradient(
    to right,
    var(--primary-color),
    var(--hover-color)
  );
}

/* Estilos para el modal */
.modal {
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal-content {
  background-color: var(--surface-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  padding: 20px;
  border-radius: 15px;
  max-width: 80%;
  max-height: 80%;
  overflow-y: auto;
}

#playlistModalList {
  list-style-type: none;
  padding: 0;
}

#playlistModalList li {
  padding: 10px;
  cursor: pointer;
  transition: var(--transition);
}

#playlistModalList li:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--hover);
}

/* Estilos para la vista de canciones de una playlist */
#playlistView {
  padding: 20px;
}

#playlistSongsList {
  list-style-type: none;
  padding: 0;
}

.context-menu {
  position: fixed;
  background-color: var(--surface-color);
  border-radius: 8px;
  padding: 10px 0;
  min-width: 150px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  z-index: 1000;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.2s, transform 0.2s;
}

.context-menu.active {
  opacity: 1;
  transform: scale(1);
}

.context-menu-item {
  padding: 10px 20px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.context-menu-item:hover {
  background-color: var(--hover-color);
}

.playlist-info {
  display: flex;
  align-items: center;
}

.playlist-icon {
  font-size: 24px;
  margin-right: 15px;
  color: var(--primary-color);
}

.playlist-name {
  font-weight: 600;
}

.playlist-song-count {
  font-size: 0.8em;
  color: var(--text-secondary-color);
  margin-left: 10px;
}

.playlist-song-item {
  display: flex;
  align-items: center;
  padding: 10px;
  border-radius: 8px;
  transition: var(--transition);
  cursor: pointer;
}

.playlist-song-item:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.playlist-song-info {
  flex-grow: 1;
  margin-left: 15px;
}

.playlist-song-title {
  font-weight: 600;
}

.playlist-song-artist,
.playlist-song-duration {
  font-size: 0.9em;
  color: var(--text-secondary-color);
}

.time-display {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  font-size: 12px;
  color: var(--text-secondary-color);
  margin-top: 5px;
}

.time-display span {
  margin: 0 2px;
}

#songList,
#libraryList,
#searchResults {
  list-style-type: none;
}

/* Media queries */
@media (max-width: 768px) {
  .container {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    height: auto;
    flex-direction: row;
    justify-content: space-around;
    padding: 10px;
  }

  .main-content {
    padding: 15px;
  }

  .nav-item {
    padding: 8px;
    margin-bottom: 0;
    margin-right: 5px;
    flex-grow: 1;
    justify-content: center;
    font-size: 0.9em;
  }

  .nav-item i {
    margin-right: 5px;
  }

  .logo {
    width: 60px;
    margin-bottom: 0;
  }

  .player {
    flex-direction: column;
    height: auto;
    padding: 10px;
  }

  .player-left,
  .player-center,
  .player-right {
    width: 100%;
    margin-bottom: 10px;
  }

  .player-cover {
    width: 40px;
    height: 40px;
  }

  .player-info {
    font-size: 0.9em;
  }

  .volume-control {
    justify-content: center;
  }

  #songList,
  #searchResults,
  #libraryList {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 15px;
  }

  .song-item {
    padding: 15px;
  }

  .cover-art {
    width: 100px;
    height: 100px;
    margin-bottom: 15px;
  }

  .song-title {
    font-size: 0.9em;
  }

  .song-artist {
    font-size: 0.8em;
  }

  .time-display {
    margin-top: 5px;
    font-size: 0.8em;
  }

  .player-btn {
    font-size: 20px;
    margin: 0 10px;
  }

  #searchInput,
  #searchButton,
  #genreFilter {
    font-size: 14px;
    padding: 8px 12px;
  }

  h1,
  h2 {
    font-size: 1.5em;
    margin-bottom: 15px;
  }

  .settings-message {
    font-size: 1em;
    padding: 15px;
  }

  #settingsView {
    padding: 20px;
  }

  .settings-title {
    font-size: 1.8em;
    margin-bottom: 25px;
  }

  .settings-section {
    padding: 20px;
    margin-bottom: 25px;
  }

  .setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
  }  

  .toggle-switch {
    margin-top: 10px;
  }

  .github-button {
    top: 1px;
    right: 11px;
    font-size: 12px;
    padding: 8px 12px;
  }

  .ai-tag {
    font-size: 0.6em;
    padding: 2px 4px;
  }
}

input[type="text"],
select,
button {
  padding: 10px;
  margin-bottom: 10px;
  border: none;
  border-radius: 5px;
}

input[type="text"],
select {
  background-color: var(--surface);
  color: var(--text-primary);
}

@media (max-width: 480px) {
  .container {
    height: calc(100vh - 170px);
  }

  .sidebar {
    height: auto;
    padding: 30px 1px;
    flex-wrap: nowrap;
    justify-content: space-between;
    overflow-x: auto;
    white-space: nowrap;
  }

  .nav-item {
    padding: 8px 10px;
    font-size: 0.75em;
    flex: 0 0 auto;
    display: inline-flex;
    flex-direction: row;
    align-items: center;
    margin-right: 12px;
  }

  .nav-item i {
    margin-right: 6px;
    font-size: 1.3em;
  }

  .logo {
    width: 35px;
    margin-right: 12px;
  }

  .main-content {
    padding: 12px;
  }

  #songList,
  #searchResults,
  #libraryList {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
  }

  .song-item {
    padding: 12px;
  }

  .cover-art {
    width: 110px;
    height: 110px;
    margin-bottom: 10px;
  }

  .song-title {
    font-size: 0.85em;
    margin-bottom: 5px;
  }

  .song-artist {
    font-size: 0.75em;
  }

  .player {
    height: 90px;
    padding: 8px 12px;
  }

  .player-left,
  .player-center,
  .player-right {
    width: auto;
    margin-bottom: 0;
  }

  .player-left {
    flex: 1;
    min-width: 0;
  }

  .player-center {
    flex: 2;
    min-width: 0;
  }

  .player-right {
    flex: 1;
    min-width: 0;
  }

  .player-cover {
    width: 35px;
    height: 35px;
    margin-right: 8px;
  }

  .player-info {
    font-size: 0.75em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .player-controls {
    justify-content: center;
    margin-bottom: 6px;
  }

  .player-btn {
    font-size: 16px;
    width: 32px;
    height: 32px;
    margin: 0 6px;
  }

  .progress-container {
    margin-bottom: 4px;
  }

  .time-display {
    font-size: 10px;
    margin-top: 3px;
  }

  .volume-control {
    justify-content: flex-end;
  }

  .volume-icon {
    font-size: 16px;
    margin-right: 6px;
  }

  .volume-slider {
    width: 70px;
  }

  #searchInput,
  #searchButton,
  #genreFilter {
    font-size: 13px;
    padding: 9px;
  }

  #genreFilter {
    margin-bottom: 14px;
  }

  h1,
  h2 {
    font-size: 1.3em;
    margin-bottom: 12px;
  }

  #createPlaylistBtn {
    font-size: 13px;
    padding: 9px 14px;
  }

  .playlist-item {
    padding: 10px;
  }

  .playlist-song-item {
    padding: 8px;
  }

  .playlist-song-info {
    margin-left: 10px;
  }

  .playlist-song-title {
    font-size: 0.8em;
  }

  .playlist-song-artist,
  .playlist-song-duration {
    font-size: 0.7em;
  }

  .settings-message {
    font-size: 0.9em;
    padding: 12px;
  }

  #settingsView {
    padding: 15px;
  }

  .settings-title {
    font-size: 1.6em;
    margin-bottom: 20px;
  }

  .settings-section {
    padding: 15px;
    margin-bottom: 20px;
  }

  .setting-label {
    font-size: 1em;
  }

  .setting-description {
    font-size: 0.8em;
  }

  .github-button {
    top: 10px;
    right: 10px;
    font-size: 12px;
    padding: 9px 10px;
  }
}

button {
  background-color: var(--primary-color);
  color: var(--text-primary);
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover {
  background-color: var(--hover);
}

/* Estilos para la vista de ajustes */
#settingsView {
  padding: 30px;
  max-width: 600px;
  margin: 0 auto;
}

.settings-message {
  background-color: var(--surface-color);
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  font-size: 1.1em;
  color: var(--text-secondary-color);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.settings-message:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.settings-title {
  font-size: 2em;
  margin-bottom: 30px;
  text-align: center;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.settings-section {
  background: linear-gradient(145deg, #2a2a2a, #242424);
  border-radius: 15px;
  padding: 25px;
  margin-bottom: 30px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.settings-section:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.setting-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.setting-label {
  font-size: 1.1em;
  font-weight: 500;
  color: var(--text-color);
}

.setting-description {
  font-size: 0.9em;
  color: var(--text-secondary-color);
  margin-top: 5px;
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 34px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: 0.4s;
  border-radius: 34px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: 0.4s;
  border-radius: 50%;
}

input:checked + .toggle-slider {
  background-color: var(--primary-color);
}

input:checked + .toggle-slider:before {
  transform: translateX(26px);
}

.settings-message {
  background: linear-gradient(145deg, #2a2a2a, #242424);
  border-radius: 15px;
  padding: 25px;
  text-align: center;
  font-size: 1.1em;
  color: var(--text-secondary-color);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.settings-message:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

.notification {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--surface-color);
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  text-align: center;
  max-width: 80%;
}

.notification p {
  margin-bottom: 15px;
  color: var(--text-color);
}

.notification button {
  background-color: var(--primary-color);
  color: var(--text-color);
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.notification button:hover {
  background-color: var(--hover-color);
}

@keyframes move-twinkle-back {
  from {
    background-position: 0 0;
  }

  to {
    background-position: -10000px 5000px;
  }
}

.stars,
.twinkling {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.stars {
  background: #000 url("https://i.imgur.com/YKY28eT.png") repeat top center;
  z-index: -2;
}

.twinkling {
  background: transparent url("https://i.imgur.com/XYMF4ca.png") repeat top
    center;
  z-index: -1;
  animation: move-twinkle-back 200s linear infinite;
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--hover-color);
}

.download-btn {
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 1em;
  margin-left: 10px;
  padding: 5px;
  transition: color 0.3s ease;
}

.download-btn:hover {
  color: #4a90e2;
}

.download-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.fa-spinner {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

.setting-value {
  font-size: 1.2em;
  font-weight: 600;
  color: var(--primary-color);
  background: linear-gradient(145deg, #2a2a2a, #242424);
  padding: 8px 15px;
  border-radius: 20px;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.setting-value:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

#totalSongsCount {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 80px;
  height: 40px;
}

#totalSongsCount::before {
  content: "\f001";
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  margin-right: 8px;
  font-size: 0.9em;
  color: var(--text-secondary-color);
}

.github-button {
  position: fixed;
  top: 20px;
  right: 20px;
  background-color: #24292e;
  color: #ffffff;
  padding: 10px 15px;
  border-radius: 5px;
  text-decoration: none;
  font-size: 14px;
  font-weight: bold;
  display: flex;
  align-items: center;
  transition: background-color 0.3s ease, transform 0.3s ease;
  z-index: 1000;
}

.github-button:hover {
  background-color: #2c974b;
  transform: translateY(-3px);
}

.github-button i {
  margin-right: 8px;
}

/* Animaciones generales */
.fade-in {
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Animaciones para elementos de la interfaz */
.nav-item,
.song-item,
.player-btn,
.volume-slider {
  transition: all 0.3s ease;
}

.nav-item:hover,
.song-item:hover,
.player-btn:hover {
  transform: translateY(-2px);
}

.logo {
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: scale(1.1) rotate(5deg);
}

/* Animación para el progreso de la canción */
.progress-bar {
  transition: width 0.1s linear;
}

/* Animación para cambios de vista */
.view {
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Animación para botones */
.btn,
#createPlaylistBtn,
#searchButton {
  transition: all 0.3s ease;
}

.btn:hover,
#createPlaylistBtn:hover,
#searchButton:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Animación para la barra de volumen */
.volume-slider {
  transition: opacity 0.3s ease;
}

.volume-slider:hover {
  opacity: 1;
}

/* Animación para el cambio de canciones */
.player-info {
  transition: all 0.3s ease;
}

.player-info:hover {
  transform: translateY(-2px);
}

/* Animación para el hover en las canciones */
.song-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.1);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.song-item:hover::before {
  opacity: 1;
}

/* Animación para el botón de reproducción */
@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

#playPauseBtn:active {
  animation: pulse 0.3s ease-in-out;
}

.ai-tag {
  display: inline-block;
  background: linear-gradient(45deg, #FF6B6B, #4ECDC4);
  color: white;
  padding: 3px 6px;
  border-radius: 12px;
  font-size: 0.7em;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-left: 8px;
  vertical-align: middle;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.ai-tag:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.15);
}